Version 5.2.0 of Winrpe installers use the built-in LOCAL SERVICE as the service account instead of a dedicated account, simplifiying the installation process. We have also updated LibreSSL to the latest available version (2.6.4). Cygwin and GNU tools have also got an update boost.

As described at a Nagios tracker post - "The SSL option of the NRPE plugin and server does not perform any kind of authentication. It has no certificates, only a DH key, which is generated at compile time. Compiling the packages with one’s own DH parameters doesn’t make it secure either. It's still anon-DH and you can connect to just any NRPE that you can reach.".